The Harmony 550 is one of (if not THE) least expensive of the Harmony series of universal remotes by Logitech. But It has almost as much functionality as the most expensive one. Most of the differences are in the extra bells an whistles (like a touch-screen). The 550 will replace all of your remotes to your home theater set-up. Unlike many other universal remotes that require you to enter various codes for each component who's remote you're replacing, and which can become obsolete as new equipment is released, the Harmony gets its remote codes from logitech via a web-like interface when it...